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Check return code of mbedtls_mpi_fill_random

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Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
Reported and fix suggested by guidovranken in #740
This commit is contained in:
Ron Eldor
2017-01-12 14:50:50 +02:00
committed by Simon Butcher
parent 36d904218b
commit ca6ff5884d
3 changed files with 7 additions and 5 deletions
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4
library/ecp.c
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@ -1128,7 +1128,7 @@ static int ecp_randomize_jac( const mbedtls_ecp_group *grp, mbedtls_ecp_point *p
/* Generate l such that 1 < l < p */
do
{
mbedtls_mpi_fill_random( &l, p_size, f_rng, p_rng );
MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &l, p_size, f_rng, p_rng ) );
while( mbedtls_mpi_cmp_mpi( &l, &grp->P ) >= 0 )
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &l, 1 ) );
@ -1527,7 +1527,7 @@ static int ecp_randomize_mxz( const mbedtls_ecp_group *grp, mbedtls_ecp_point *P
/* Generate l such that 1 < l < p */
do
{
mbedtls_mpi_fill_random( &l, p_size, f_rng, p_rng );
MBEDTLS_MPI_CHK( mbedtls_mpi_fill_random( &l, p_size, f_rng, p_rng ) );
while( mbedtls_mpi_cmp_mpi( &l, &grp->P ) >= 0 )
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_r( &l, 1 ) );